1 /* 2 * Copyright 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include <jni.h> 18 #include <stdio.h> 19 20 #include "base/logging.h" 21 #include "base/macros.h" 22 23 #include "jni_binder.h" 24 #include "jvmti_helper.h" 25 #include "test_env.h" 26 27 #include "901-hello-ti-agent/basics.h" 28 #include "909-attach-agent/attach.h" 29 #include "936-search-onload/search_onload.h" 30 #include "983-source-transform-verify/source_transform.h" 31 32 namespace art { 33 34 namespace common_redefine { 35 jint OnLoad(JavaVM* vm, char* options, void* reserved); 36 } // namespace common_redefine 37 38 namespace common_retransform { 39 jint OnLoad(JavaVM* vm, char* options, void* reserved); 40 } // namespace common_retransform 41 42 namespace common_transform { 43 jint OnLoad(JavaVM* vm, char* options, void* reserved); 44 } // namespace common_transform 45 46 namespace { 47 48 using OnLoad = jint (*)(JavaVM* vm, char* options, void* reserved); 49 using OnAttach = jint (*)(JavaVM* vm, char* options, void* reserved); 50 51 struct AgentLib { 52 const char* name; 53 OnLoad load; 54 OnAttach attach; 55 }; 56 57 // A trivial OnLoad implementation that only initializes the global jvmti_env. 58 static jint MinimalOnLoad(JavaVM* vm, 59 char* options ATTRIBUTE_UNUSED, 60 void* reserved ATTRIBUTE_UNUSED) { 61 if (vm->GetEnv(reinterpret_cast<void**>(&jvmti_env), JVMTI_VERSION_1_0) != 0) { 62 printf("Unable to get jvmti env!\n"); 63 return 1; 64 } 65 SetAllCapabilities(jvmti_env); 66 return 0; 67 } 68 69 // A list of all non-standard the agents we have for testing. All other agents will use 70 // MinimalOnLoad. 71 static AgentLib agents[] = { 72 { "901-hello-ti-agent", Test901HelloTi::OnLoad, nullptr }, 73 { "909-attach-agent", nullptr, Test909AttachAgent::OnAttach }, 74 { "916-obsolete-jit", common_redefine::OnLoad, nullptr }, 75 { "921-hello-failure", common_retransform::OnLoad, nullptr }, 76 { "934-load-transform", common_retransform::OnLoad, nullptr }, 77 { "935-non-retransformable", common_transform::OnLoad, nullptr }, 78 { "936-search-onload", Test936SearchOnload::OnLoad, nullptr }, 79 { "937-hello-retransform-package", common_retransform::OnLoad, nullptr }, 80 { "938-load-transform-bcp", common_retransform::OnLoad, nullptr }, 81 { "939-hello-transformation-bcp", common_redefine::OnLoad, nullptr }, 82 { "941-recursive-obsolete-jit", common_redefine::OnLoad, nullptr }, 83 { "943-private-recursive-jit", common_redefine::OnLoad, nullptr }, 84 { "983-source-transform-verify", Test983SourceTransformVerify::OnLoad, nullptr }, 85 }; 86 87 static AgentLib* FindAgent(char* name) { 88 for (AgentLib& l : agents) { 89 if (strncmp(l.name, name, strlen(l.name)) == 0) { 90 return &l; 91 } 92 } 93 return nullptr; 94 } 95 96 static bool FindAgentNameAndOptions(char* options, 97 /*out*/char** name, 98 /*out*/char** other_options) { 99 // Name is the first element. 100 *name = options; 101 char* rest = options; 102 // name is the first thing in the options 103 while (*rest != '\0' && *rest != ',') { 104 rest++; 105 } 106 if (*rest == ',') { 107 *rest = '\0'; 108 rest++; 109 } 110 *other_options = rest; 111 return true; 112 } 113 114 static void SetIsJVM(const char* options) { 115 SetJVM(strncmp(options, "jvm", 3) == 0); 116 } 117 118 } // namespace 119 120 extern "C" JNIEXPORT jint JNICALL Agent_OnLoad(JavaVM* vm, char* options, void* reserved) { 121 char* remaining_options = nullptr; 122 char* name_option = nullptr; 123 if (!FindAgentNameAndOptions(options, &name_option, &remaining_options)) { 124 printf("Unable to find agent name in options: %s\n", options); 125 return -1; 126 } 127 128 SetIsJVM(remaining_options); 129 130 AgentLib* lib = FindAgent(name_option); 131 OnLoad fn = nullptr; 132 if (lib == nullptr) { 133 fn = &MinimalOnLoad; 134 } else { 135 if (lib->load == nullptr) { 136 printf("agent: %s does not include an OnLoad method.\n", name_option); 137 return -3; 138 } 139 fn = lib->load; 140 } 141 return fn(vm, remaining_options, reserved); 142 } 143 144 extern "C" JNIEXPORT jint JNICALL Agent_OnAttach(JavaVM* vm, char* options, void* reserved) { 145 char* remaining_options = nullptr; 146 char* name_option = nullptr; 147 if (!FindAgentNameAndOptions(options, &name_option, &remaining_options)) { 148 printf("Unable to find agent name in options: %s\n", options); 149 return -1; 150 } 151 152 AgentLib* lib = FindAgent(name_option); 153 if (lib == nullptr) { 154 printf("Unable to find agent named: %s, add it to the list in test/ti-agent/common_load.cc\n", 155 name_option); 156 return -2; 157 } 158 if (lib->attach == nullptr) { 159 printf("agent: %s does not include an OnAttach method.\n", name_option); 160 return -3; 161 } 162 SetIsJVM(remaining_options); 163 return lib->attach(vm, remaining_options, reserved); 164 } 165 166 } // namespace art 167
